Improvement in elevators



2 Sheets-Sheet 1. W. FELLOWS.

Elevator.

No. 219,704. Patented Sept. 16,1879. jl"

.l L ATTORNEY r ,L FETm. PNDYO-UTHUGRAPHEI, WASHINGTON. D C

2 Sheet s-Sheet 2. W. PELLUWS.

Elevator. l No. 219,704. Patented Sept. 16, 1879.

WLTNESSES W INVENTOR a- UQ e0/aw e q `1\ A ATTORNEY UNITED STATES:

PATENT OFFICE.

` WARREN EELLowS, oF SING SING, NEw YORK, ASSIGNoR 0E ONE-HALF HIS RIGHTTo DAvIn SHIELDS, oF SAME PLAGE.

IMPROVEMENT IN ELEVATORS.

Specification forming part of Letters Patent No. 219,704, datedSeptember 16, 1879; application filed July 26, 1879.

To all whom it may concern:

Be it known that I, WARREN FELLows, of SingSing, in the county ofWestchester and State of New York, have invented a new and valuableImprovement in Elevators; and I do hereby declare that the following isa full, clear, and exact description of the construction and operationof the Samar-"reference being had to the annexed drawings, making a partof this specification, and to the letters and figures of referencemarked thereon.

Figure l of the drawings is a representation of a side view of myinvention. Fig. 2 is a vertical section thereof'.` Fig. 3 is a top viewof the same; and Fig. 4 is a detail section.

This invention has relation to improvements in elevators designed moreespecially for use in warehouses, stores, and manufactories, but capableof being used to advantage in resi- -fdences and hotels.

The object of thel invention is, mainly, to devise an elevator operatedby continuouslyworking power, wherein the latter will be out of thecontrol of the attendant, whose whole attention may then be given tothrowing the l operative parts of the machine out of gear by looseningthe belt'and lowering the upper or driven pulley more or less forciblyupon a shoe fixed to the frame, by which means the elevator may bestopped at any desired point, and lowered at pleasure and at any desiredspeed without the employment of reversing mechanisms, all as willbehereinafter fully shown and described.

In the annexed drawings, the letters A A' designate two parallel,preferably metallic, beams, extending from the lower floor of a buildingthrough the various hatchways thereof above the upper floor a sufficientdistance, in which is arranged, after the manner of a sash, the platformB. This is usually composedv of a horizontal table, a, and a rectangularmetallic frame, a', uponl which the table rests and is secured. The sidebars, c, of this frame are vertically grooved to receive correspondingribs or tongues upon the contiguous faces of the guide-beams A A.

At a point above the highest point of elevation of the platform-supporta' is a shaft, C, having its bearings in the guides A A', and

provided midway between said guides with a drum, D, to which iS securedthe hoisting rope or chain, D', whereof the other end is attached to theupper horizontal bar, b, of the platformsupport or bail c'. This shaftGis also provided with a large gear-wheel, D2, that meshes with apinion, c', upon a shaft, D4, above shaft G. This Shaft D4 has itsbearings at one end in the guide-beam A, and is carried through a slot,s, of an offset, d, of beam A' at the other in a vertically vibratinglever, E, at right angles to the plane of guide-beamsA A'. This leverhas its fulcrum in the end of the said oEset, and carries at its freeend a weight, w. Outside of guide-beam A', upon the end of shaft D4, isa grooved pulley-wheel, H, which the weight w holds, under certaincircumstances, in forcible contact with a crescentshaped shoe, G,rigidly secured to the beam A'. Below pulley H, at a suitable point forthe application of power, is a second pulley, H', having its bearings ona spindle, e, projecting from the guide A'.

Thepulley H, under ordinary circumstances, is held down forcibly by theweighted lever upon the shoe G, and the endless belt G', passing aroundpulleys H and H', depends from the former, and is not in contact withthe latter, so that continuous motion maybe imparted to the master-wheelH' without actuating the platform; but if the lever E be raised so as totighten the belt around the said pulleys, the shaft D4 will be actuated,and, through the medium of pinion c' and gear-wheel D2, motion impartedto the Winding-drum shaft G with the eEect of raising the platform.

The raising of lever E is effected easily by alever, J, in the sameplane with the guides A A', and having its fulcrum in an offset, t, atvright angles to the offset d aforesaid. The weight end of lever J isengaged with the power end of lever E, and its power end provided with arope or chain, L', reaching to the 'ground-oor of the building. Bydrawing down upon this rope the pulley H is raised off of the shoe, thebelt tightened, and the drum actuated 5 consequently the platform israised. By this means the platform is managed from the ground-floor bythe attendant. But if it be desired that he ascend with the platform, Iuse the following device: The lever is provided with another rope, R,and the platform with a lever, L, 'fulcrumed thereon, or on an offsetproject-ing therefrom, or on the side bar of the bail or support. Thislever has a longitudinal slot, s, in which, at each side of the fulcrumthereof, is a pulley-wheel, the one lettered I and the other l. The ropeIt ispassed under pulley I on the power-arm side of the lever; thenceover pulley I; thence downward to the tloor, to which itis then rigidl)secured. The rope lt. is sufficiently slack to run freely when the platlform is operated from the ground, and opposes very slightresistance,ifan v,to its movements; but by forcing the power'arni of lever L downrope R is tightened, and operates precisely as above set forth to raisepulley H, tighten belt G', and raise the platform. The friction ofpulley H upon the brakeshoe G is snfticient at any time to lock theplatform at any desired point of elevation, so that b v merely lettinggo the operatingcords this result is attained; but if it be desired tolower the platform, a more or less forcible stead)v pull upon the saidcords, according to the weight on the platform, will, by raising pulleyH ofi its shoe more or less, decrease in a corresponding degree thefriction of the former upon thelatter, and allowT the platform todescend by its own weight. This, it will be observed, is accomplishedwithout additional belting or other rcversing appliances.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, with the guidesAA, platform B, shaft U, having.;` drumD, rope D1, and gear wheel D2, of the shaft D4, pinion C', weightedbearing-lever E, driven pulley H on said shaft, shoe (i, lever J, andrope L', substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

WARREN FELLOWS.

Witnesses C. B. PALMER, PIERCE REYNOLDS.

